The scouting system is clearly shit since Moyes left. We'll continue to take cast offs from the top 6 clubs and achieve nothing.
This is part of the problem with premiership management at the moment, most managers won't entertain long term outlooks, hell why would they? If you have 6/8 bad games you are at risk.
This breeds short term thinking, it is the position of the rest of the club to develop youth to an extent it can be pushed/pulled into the first team.
Big Sam is picking someone he thinks will fill the gap for pace and a goal threat needed by the team, why would he care what happens after 18 months?